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Finding the Fourth Proportional to 71,796.87, 99,110.31 and 51,113.70

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Solution

The fourth proportional to 71,796.87, 99,110.31 and 51,113.70 is: 70,558.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,796.87 : 99,110.31 = 51,113.70 : x
  2. Step 2: Convert to fraction form
    71,796.87/99,110.31 = 51,113.70/x
  3. Step 3: Cross multiply
    71,796.87x = 99,110.31 × 51,113.70
  4. Step 4: Simplify right side
    71,796.87x = 5,065,894,652.25
  5. Step 5: Solve for x
    x = 5,065,894,652.25/71,796.87
  6. Step 6: Final answer
    x = 70,558.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.